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Math Help - Find exact solution to system?

  1. #1
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    Find exact solution to system?

    I am working my homework out and ran into a snag. Be advised that this is only the third day of class so advanced concepts have not yet been learned.

    Using just the basics I am trying to do this problem. See attached image file.

    I did the first step..now on the second step I'm not sure what to do.
    I just need concepts mostly. Any help would be appreciated.

    .
    http://viewmorepics.myspace.com/inde...ageID=70399303
    Click link to see image file.

    Thanks.
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  2. #2
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    if i put in REF form and on bottom row i have

    0 0 0 1 a(b+3)/(a+b) which corresponds to
    w = a(b+3)/(a+b)

    So can I say the system has a unique solution when w = a(b+3)/(a+b)?

    I'm so confused.
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  3. #3
    MHF Contributor

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    As long as a+ b\ne 0 that is the unique solution. Now, go back to before you divided by a+ b. What happens if a+ b= 0?
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  4. #4
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    Thanks

    Appreciate the help. I finally figured it all out for that problem. Pfew!

    The dividing by potential 0's were def a bad move.
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